//
//  JudgeTools.c
//  SDKDebuggingDemo
//
//  Created by 秦晟哲 on 2019/8/9.
//  Copyright © 2019 QinszQSZ. All rights reserved.
//

#include "JudgeTools.h"


#include <assert.h>
//#include <stdbool.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/sysctl.h>

uint32_t AmIBeingDebugged(void)
// Returns true if the current process is being debugged (either
// running under the debugger or has a debugger attached post facto).
{
    int                 junk;
    int                 mib[4];
    struct kinfo_proc   info;
    size_t              size;
    
    // Initialize the flags so that, if sysctl fails for some bizarre
    // reason, we get a predictable result.
    
    info.kp_proc.p_flag = 0;
    
    // Initialize mib, which tells sysctl the info we want, in this case
    // we're looking for information about a specific process ID.
    
    mib[0] = CTL_KERN;
    mib[1] = KERN_PROC;
    mib[2] = KERN_PROC_PID;
    mib[3] = getpid();
    
    // Call sysctl.
    
    size = sizeof(info);
    junk = sysctl(mib, sizeof(mib) / sizeof(*mib), &info, &size, NULL, 0);
    assert(junk == 0);
    
    
    // We're being debugged if the P_TRACED flag is set.
    return (info.kp_proc.p_flag & P_TRACED) ;
}
